Nuclear meters for measuring soil density and moisture in thin surface layers,

Cover title.

Experimental relationships between moduli for soil layers beneath concrete pavements /

Mode of access: Internet.

Experimental studies to determine the chemical species prevalent in the plasma of an air arc and the boundary layers adjacent to ablating materials

Mode of access: Internet.

The shock layer concept and three-dimensional hypersonic boundary layers.

"This report is based on research sponsored by the U.S. Navy through the Office of Naval Research, Contract Nonr-2653(00)"

Guidelines for the alternate assessment of children with disabilities /

Contains the IDEA amendments of 1997 related to alternate assessment and the Illinois State Board of Education's guidelines regarding the alternate assessment of the educational progress of students with disabilities in Illinois school districts.

A manual containing directions for sowing, transplanting and raising of the mulberry tree : together with proper instructions for propagating the same by cuttings, layers, &c., &c. As also, directions for the culture of silk: to which is added, calculations shewing the produce and probable expense of cultivation of from one to ten acres, as tested by actual results /

Checklist Amer. imprints,

Propagation of plants; a complete guide for professional and amateur growers of plants by seeds, layers, grafting and budding, with chapters on nursery and greenhouse management,

Bibliography: p. 527-531.

Polyphase electric currents and alternate-current motors...

"Schedule of some British patents bearing on polyphase and alternating-current motors," p. 483-488.

Spreading resistance analysis for silicon layers with nonuniform resistivity /

"Issued May 1979."

Ex ante evaluations of alternate data structures for end user queries: Theory and experimental test

The data structure of an information system can significantly impact the ability of end users to efficiently and effectively retrieve the information they need. This research develops a methodology for evaluating, ex ante, the relative desirability of alternative data structures for end user queries. This research theorizes that the data structure that yields the lowest weighted average complexity for a representative sample of information requests is the most desirable data structure for end user queries. The theory was tested in an experiment that compared queries from two different relational database schemas. As theorized, end users querying the data structure associated with the less complex queries performed better Complexity was measured using three different Halstead metrics. Each of the three metrics provided excellent predictions of end user performance. This research supplies strong evidence that organizations can use complexity metrics to evaluate, ex ante, the desirability of alternate data structures. Organizations can use these evaluations to enhance the efficient and effective retrieval of information by creating data structures that minimize end user query complexity.